Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(104 KB bytes)

Title: Static and vibration moduli of elasticity of salvaged and new joists

Author: Cai, Zhiyong; Hunt, Michael O.; Ross, Robert J.; Soltis, Lawrence A.

Date: 2000

Source: Forest products journal. Vol. 50, no. 2 (Feb. 2000).:p. 35-40 : ill.

Publication Series: Not categorized

Description: Conservation ethics and material shortages are stimulating interest in reusing wood products from demolished buildings and reusing entire buildings. As one of an anticipated series of reports coming from our research project titled, bNondestructive structural evaluation of wood floor systems in historic buildings,c this paper reports the results of determining the modulus of elasticity (MOE) of wood joists via static and vibration methods in both edgewise and flatwise orientations. Fifteen new southern pine joists (2-by 16- in. by 30 ft.) and nine joists (2- by 16- in. by 20 ft.) salvaged from a 90-year old warehouse were examined. For the salvaged joists, a considerable difference was observed between the edgewise MOE and flatwise MOE for both vibration and static methods. Correlative relationships were found for both new and salvaged joists for vibration edgewise MOE versus stress wave MOE; static edgewise MOE versus stress wave MOE; static edgewise MOE versus vibration edgewise MOE; and for static edgewise MOE versus static flatwise MOE. These relationships may be useful in the ongoing research of structural evaluation of in-place floor systems.

Keywords: Beams, Modulus of elasticity, Statics, Vibration, Methodology

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Cai, Zhiyong; Hunt, Michael O.; Ross, Robert J.; Soltis, Lawrence A. 2000. Static and vibration moduli of elasticity of salvaged and new joists. Forest products journal. Vol. 50, no. 2 (Feb. 2000).:p. 35-40 : ill.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.